Because the thing people refer to when they say “linux” is not actually an operating system. It is a family of operating systems built by different groups that are built mostly the same way from mostly the same components (which, themselves are built by separate groups).
A bit more context for that quote:
The “one state” in the one-state solution is Israel, which currently views itself as an occupying power, and has Jewish Supremacy enshrined in her basic law (essentially constitution). Jews are not the group that is at risk in this scenario.